Periphery — a menu-bar utility for macOS

See every screen,
without turning around.

Periphery puts every external display in a floating panel on the Mac in front of you. Connect a projector or conference-room TV and its preview appears automatically. Check your slides, speaker notes, or live demo without looking over your shoulder.

Download Periphery from the App Store

7 days free · One-time purchase · Family Sharing included

Platform
macOS 26 or later
Lives in
The menu bar
Built on
ScreenCaptureKit
Network
StoreKit only
Periphery's floating panel showing live previews of two external displays
Fig. 01 — Two external displays in the floating panel.

02 / Features

Watch the screen
behind you.


01

Know what the room sees

A live preview tells you more than a display diagram.

  • See every external display at once, with previews that update as the screens change
  • Check slides, speaker notes, and demos without leaving your seat
  • Connect a display and its preview appears; disconnect the last one and the panel closes
One external display filling Periphery's full-screen monitoring view
Fig. 02 — One display, full screen.

02

Set up the panel your way

Choose the layout and controls once. Periphery remembers them.

  • Show or hide the panel with a global shortcut; the default is ⇧⌘P, and you can change it
  • Arrange previews horizontally or vertically and choose their corner radius
  • Open one display full screen with ⇧⌘F, then move between displays with the arrow keys
  • Choose any frame rate from 0.5 to 60 FPS; lower rates use less battery
Periphery's settings window with layout, frame rate and shortcut options
Fig. 03 — Settings.

03

A small, native Mac app

Familiar controls, no account, and nothing extra in the way.

Native materials
The panel uses macOS Liquid Glass and follows the system appearance. Light and dark mode work automatically.
Menu bar first
Periphery hides its Dock icon by default and stays in the menu bar. You can show the Dock icon again in Settings.
Ready at login
Launch Periphery at login and have the panel open when an external display connects. No setup in front of the room.
Stops when hidden
Periphery captures only while the panel or full-screen view is open. Hide it and capture stops. Use a lower frame rate when you only need occasional updates.

04 / Privacy

Your screens stay
on your Mac.

Periphery processes every preview on your Mac. It does not upload, record, or save display content. macOS asks for Screen Recording permission before capture begins, and capture stops when you hide the panel. The app is sandboxed, requires no account, and includes no analytics.

Account
None
Analytics
None
App services
StoreKit only
When hidden
Capture stops

Keep the other screen
in view.

Download Periphery from the App Store

7 days free · One-time purchase · Family Sharing included

Requires macOS 26 or later · one external display